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What is the difference between the "Null hypothesis" and the alternate hypothesis? What are some tips for knowing how to set up the two hypothesis?
1. Body Mass Index (BMI) is a number calculated from a person's weight and height and is calculated by the formula: weight (kg) / [height (m)]2. Though somewhat controversial and not meant to be used as a diagnostic criteria, it can be used to charac..
Calculate chi-square for this table. Show your work. Draw a table just like the one above, leaving room in each cell to record these numbers: observed frequency fo), expected frequency fe), Fo -fe(f0-fe)2 and (f0-fe)2/fe
Heinz, a manufacturer of ketchup, uses a particular machine to dispense 16 ounces of the ketchup into containers. From many years of experience with the particular machine, they know that each container follows a normal distribution with a mean of 16..
A journal article was recently published about typing skills, and in this article, the results of a national typing test were reported. The authors of the article claim that the population of those considered to be "skilled" typists can type an avera..
An average of 8.5 cars are sold per 10-hour day on Saturdays and Sundays in January and February. A) On the first Saturday in February, the dealership opens at 9am. Find the probability that the time until the first sale is more than 2 hours...
State the null hypothesis for the non-oil-dependent/oil-dependent comparison. Calculate the difference between the means of the democracy scale for non-oil-dependent and oil-dependent countries, Calculate the standard error of the difference. Calcula..
The mean sales per customer µ for all of the sales for your company last month is not known. Based on your past experience, you are willing to assume that the population standard deviation of sales, σ, is about $220. If you take a random sample of 10..
The labor relations manager of a large corporation wished to study the absenteeism among workers at the company's central office during the last year. A random sample of 25 workers revealed the following: an average of 9.7 days; a standard deviation ..
Collect data about hair salons clients vs. walk In's and product vs. services. Explain how you obtained a suitable sample of either qualitative or quantitative data. Review data for validity and reliability. Use descriptive statistics to summarize da..
Utilizing the Post-First feature. You will not be able to see your classmates' posts until after you have made your own post. This is intentional. You must use your own work for answers to questions 1-5. If something happens that leads you to want to..
Identify the type of observational study (cross-sectional, retrospective, or prospective) described
The company SlimDown makes weight loss products.
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